Casing for incandescent-electric-lamp sockets.



C. H. BISSELL.

GASING FOR INGAN'DBSGBNT ELECTRIC LAMP sooKBTs.

APPLICATION FILED IEB.18, 1911.

1,675,539, Patented 0@t.14,'1913.

lll" I4IIIH amelie l ENT @hllllllEQ CARL E. BESSELL, QF SYEACUSE-NEW YORK, .ASSGNOR T0 CBOUSE-HIN'DS GOMPAANYY,

0F SYRAGUSE, NEW YORK, A.

CORPORATION OF NEW YORK.

CASING FORNCANDESGENT-ELECTRIG-LAM? SOCKETS.

Speccation of Letters Patent.

resented oet. i4, 1.913.

-pptcaton filed. February 18, wil. Serial Ita-609,350.

To all whom t may conce/m i Be it known that l", CARL l-l. Syracuse, in the county or Onondaga an State of New York, have invented a certain new and useful Casing for Incandescent- Electric-Lamp Sockets, of which the following is a specification.

rlhis invention has for its object the production of a casing for incandescent electric lamp sockets, which can be readily applied to, and removedfrom, it consists inthe combinations and constructions hereinafter set forth and claimed ln describing this invention reference is had to the accompanying drawing inwhich like characters designate corresponding parts in all the views.

Figure l is an unassembled View or the members ci the casing, the cap member being shown in section and the lower portion of the shell member being broken away. Fig. 2 is a fragmentary sectional view illustrating the position of the cap and shell members prior to the interlocking of the shoulders thereof. Fig. 3 is a view similar to Fig.. 2 illustrating the position of the parts when such shoulders are interlocked. Fig. 4 is a section on line Ar-A Fig. 3. Fig. 5 is an end view of the capf` member looking upwardly. or the shell member looking downwardly. Fig. 7 is a detail view of the ring associated with the cap member.

This casing for incandescent electric lamp sockets comprises a shell member and a cap member, one being formed with an internal annular groove and having shoulders associated therewith and projected inwardly into the groove, and the other member being formed with peripheral shoulders near one end thereof for interlocking with the irst-mentioned shoulders, the cap and shell members having successive axial and partial rotative movements relatively to each other lor interlocking said shoulders.

In this. embodiment of my invention the cap member is formed with a groove and internal shoulders and the shell member with peripheral shoulders. Y

l is the cap member and 2 is the shell member, the cap member being formed with an intermediate cylindrical portion 3 and an offset annular portion d forming an internal. annular groove '5 below the cylindrical portion 3. .The cap member is also formed BIssnLL, of

the' socket; and

Fig. 6 is anend view with inwardly facing notches 6 at its lower end. Usually a ring 7 is fitted within the dgrcove 5, such ring having a series of inwardly projecting shoulders 8 pressed therefrom. The-se shoulders are usually formed by slitting the ring horizontally once for each shoulder and pressing inwardly the portions of the ring below the slits. The cap-member isalso formed with a suitable coupling 9 by means of which the casing is secured to. the supporting xture.

The shelll member 2 is formed with downwardly facing shoulders 10 near its 'upper end, the upper end portion'll of the shell member being designed to lit. into the intermediate cylindrical portion 3 of the cap member (Fig. 3) by an axial movement of the members l, 2, the shoulders l0 during such axial movement Ypassing between shoulders 8 of the ring 7 and being moved into interlocking engagement therewith by partial rotation of the shell member. The shell member 2 is also formed with a spring catch 12 in the form of a tongue struck from the shell member, said catch being designed to snap into one of the notches 6 when the shoulders 10 interlock with the shoulders 8. rlhe shoulders l0 are formed in the shell member in the Asame manner as the shoulders 8 are formed in the ringV 7.

It for any reason it is necessary to remove the socket 4from the casing, the shell member; 2 can be quickly removed by depressing the catch 12 out of the notch 6 with which it is engaged, by turning the Vshell member until the shoulders 10V there projection, and a notched edge for permitting the passage of the projection and forA coperating with the locking member, sub- .i

stantially as and for 'the purpose described.

2. A casing for incandescent electric lamp sockets comprising a shell member and a cap member, one being formed with an internal annular groove and provided with a ring in the groove formed with inwardly projecti.`

ing shoulders struck therefrom, the end por- 1,1@

' tion of the other member extending into the .first-named member and having substantially rigid peripheral shoulders for interlocking wlth the shoulders of the ring, and the members having successive axial and partial rotary movements for interlockingthe shell member, and an edge for coperating with said shell member, and an oiset annular portion intermediate the first-named annular portion and said edge, said offset .annular part having inwardly extending projections, and a shell member having a l plain marginal edge portion for entering the rst-named annular portion, and having a peripheral 'projection coacting with said projections and having a yielding tongue cooperating with the edge portion of the cap, iulstantially as and for the purpose speci- 4. A casing for incandescent electric lamp sockets comprising a shell member and a cap member, the cap member being formed with an internal cylindrical portion and anoi'set portion between said cylindrical portion and thelower end of the cap, the offset portion forming an annular groove, a ring iitted within the groove and formed with shouldersstruck therefrom projecting into the groove and spaced apart at intervals, the shell member being provided with substantially rigid peripheral shoulders spaced apart for interlocking with the first-mentioned shoulders, the upper end portion of the shell member being designed to fit into the cylindrical portion of the cap member,

.and the members having successive axial and partial rotary movements for movingthe .upper end portion of the shell member into said cylindrical portion of the cap member, and carrying the shoulders of the 'shell member between the shoulders of said ring and into interlocking engagement therewith, substantially as and for v the purpose described. i

5. A casing for incandescent electric lamp sockets, comprising a shell. member and a cap member, the cap member being formed with an intermediate cylindrical portion and anl off-set portion between the cylindri- :cal portion and the lower end of the cap, the' off-set portion forming an annular groove,

shoulders lassociated with thefcap member and projecting into the groove, the shoulders being spaced apart, the shell member being provided withsubstantially rigid peripheral shoulders for interlockin with the shoulders of the cap member, t e upper end portion of the shell'being designed to fit into the cylindrical portion of the cap member, and the members.` having successive axial and partial rotary movements for moving 'the upper end portion into the cylindrical portion of the cap member and carrying the shoulders of the shell member above the shoulders of the-cap member and into int-erlocking` engagements therewith, the cap member bein provided' with internal notches at its glo ing into a notch, said catch being in the form of a springv tongue, substantially as and for the purpose specified.

6. A casing for incandescent electric lamp sockets comprising a shell member and-a cap member, the cap'member being provided with an internal ring of sheet metal formed with a plurality of inwardly rojecting shoulders' spaced apart, and the sliell member being formed with external projecting shoulders, the shoulders of the shell and cap being movable 'into interlocking engagement by successive axial and partial rotary movements of said members, and each shoulder being formed by forming the part provided therewith with al slit extending circumferentially thereof and 'displacing the metal adjacent said slit to project from said part, substantially as andvfor the purpose 4signed my'name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 13th day of January, 1911.

CARL H. BIS SELL.

Witnesses:

WM. CORNELL BLANDING, C. C. SCHOENECK.

Copies of this patent may be obtained for ilve cents each, by addressing the Commissioner of Patents, Washington, D. G.

n wer end and the shell por' tion being provided with a catch for enter- 

